BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 267 53.7%
2 United States 108 21.7%
3 Germany 42 8.5%
4 Canada 33 6.6%
5 Netherlands 29 5.8%
6 Hong Kong 4 0.8%
7 Indonesia 2 0.4%
8 Japan 2 0.4%
9 Korea, Republic of 2 0.4%
10 Russia 2 0.4%
11 Singapore 2 0.4%
12 Taiwan 1 0.2%
13 Ukraine 1 0.2%
14 United Kingdom 1 0.2%
15 Chile 1 0.2%